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Finding the Fourth Proportional to 79,805.61, 110,137.21 and 48,774.20

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Solution

The fourth proportional to 79,805.61, 110,137.21 and 48,774.20 is: 67,311.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,805.61 : 110,137.21 = 48,774.20 : x
  2. Step 2: Convert to fraction form
    79,805.61/110,137.21 = 48,774.20/x
  3. Step 3: Cross multiply
    79,805.61x = 110,137.21 × 48,774.20
  4. Step 4: Simplify right side
    79,805.61x = 5,371,853,879.23
  5. Step 5: Solve for x
    x = 5,371,853,879.23/79,805.61
  6. Step 6: Final answer
    x = 67,311.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.